package com.neuedu.jxcboot.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

/**
 * 允许跨域访问
 * 
 * @author chens
 *
 */
@Configuration
public class CorsConfig {

	/**
	 * 当前跨域请求最大有效时长。这里默认1天
	 */
	private static final long MAX_AGE = 24 * 60 * 60;

	@Bean
	public CorsFilter corsFilter() {
		UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
		CorsConfiguration corsConfiguration = new CorsConfiguration();
		corsConfiguration.addAllowedOrigin("*"); // 1 设置访问源地址
		corsConfiguration.addAllowedHeader("*"); // 2 设置访问源请求头
		corsConfiguration.addAllowedMethod("*"); // 3 设置访问源请求方法
		corsConfiguration.setMaxAge(MAX_AGE);
		source.registerCorsConfiguration("/**", corsConfiguration); // 4 对接口配置跨域设置
		return new CorsFilter(source);
	}
}